Today's starting pitching matchup features Houston Astros's Tatsuya Imai (5-4, 6.14 ERA) against Washington Nationals's Andrew Alvarez (2-1, 3.05 ERA).

Washington Nationals's Andrew Alvarez posts an solid 3.05 ERA this season, while Tatsuya Imai has been struggling at 6.14. There is a clear gap in starting pitching quality.

Advanced metrics: Tatsuya Imai — FIP 4.88, K% 27.9%, 48.3 IP / Andrew Alvarez — FIP 2.64, K% 27.6%, 41.3 IP

2026 season record: Houston Astros 45-48 (.484), Washington Nationals 47-45 (.511).

Recent form: Houston Astros on a 1-game losing streak, Washington Nationals on a 1-game win streak.

Based on starting pitching, Washington Nationals holds the edge.

Houston Astros bullpen: 13 relievers on the active roster. Key arms: AJ Blubaugh (Setup) 3.57 ERA, 56K in 58.0IP, Bryan Abreu (Closer) 5.90 ERA, 37K in 29.0IP, Bryan King (Closer) 2.08 ERA, 30K in 39.0IP.

Washington Nationals bullpen: 12 relievers on the active roster. Key arms: Andrew Alvarez 3.05 ERA, 48K in 41.1IP, Brad Lord (Setup) 3.88 ERA, 52K in 58.0IP, Carson Palmquist 8.44 ERA, 7K in 5.1IP.

Projected win probability: Houston Astros 34% vs Washington Nationals 66%

Factors: Washington Nationals's starter owns the lower ERA, Washington Nationals's home-field advantage. Of course, baseball's inherent randomness means actual results may differ.

Workload comparison: Tatsuya Imai averages 4.0 IP per start vs. Andrew Alvarez at 8.3 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.